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尝试构建一个 Struts 2 应用程序，将用户引导到一个页面 ( Display.jsp)，该页面显示用户定义的 RGB 颜色配置的颜色。我从 Budi Karniawan 的 Struts 2 教程中获得了示例。当我手动剪切和粘贴源代码并将应用程序手动构建为 NB Web 应用程序时，尽管 RGB 参数以正确的格式输入，但它会引发验证错误，但它运行良好（我检查了我是否使用逗号分隔的数字输入RGB 坐标即：绿色为 0,255,0)。目录结构为：

在此处输入图像描述

然后我决定导入项目文件（从现有源选项创建 Web 应用程序）。我使用 antbuild.xml文件来编译和运行应用程序。

当我通过应用程序名称运行应用程序时：

http://localhost:8084/Budi7c

我得到：

no Action mapped for namespace [/]

然后我附加映射的动作名称struts.xml

http://localhost:8084/Budi7c/Design1.action

我得到一个 HTTP 404。但是当我尝试手动构建项目时，上面的 Deisgn1.action 参考有效。给定以下文件，谁能告诉我正确导入和运行此应用程序的最佳方法？我宁愿使用 ant 脚本而不是 MAVEN（因为使用 Maven 构建 Struts 2 似乎存在很多问题）。我只想知道在尝试运行 struts 操作时避免 404 错误的方法。

如果我尝试手动构建应用程序，输入验证将失败（即使我正在输入数字并用逗号分隔它们）。如果我尝试导入并使用 Ant 以确保正确构建，我最终会得到 404。

该应用程序如下：

web.xml：

<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
     version="2.5"> 

     <filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>    
</filter>
<filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>



<!-- Restrict direct access to JSPs. 
For the security constraint to work, the auth-constraint
and login-config elements must be present -->
<security-constraint>
    <web-resource-collection>
        <web-resource-name>JSPs</web-resource-name>
        <url-pattern>/jsp/*</url-pattern>
    </web-resource-collection>
    <auth-constraint/>
</security-constraint>

<login-config>
    <auth-method>BASIC</auth-method>
</login-config>
</web-app>

struts.xml：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

<constant name="struts.enable.DynamicMethodInvocation" value="false" />
<constant name="struts.devMode" value="true" />

<package name="app07c" extends="struts-default">
    <action name="Design1">
        <result>/jsp/Design.jsp</result>
    </action>
    <action name="Design2" class="app07c.Design">
        <result name="input">/jsp/Design.jsp</result>
        <result name="success">/jsp/Display.jsp</result>
    </action>
</package>

</struts>

Color.java：

package app07c;
import com.opensymphony.xwork2.ActionSupport;

public class Color extends ActionSupport {
private int red;
private int green;
private int blue;
public int getBlue() {
    return blue;
}
public void setBlue(int blue) {
    this.blue = blue;
}
public int getGreen() {
    return green;
}
public void setGreen(int green) {
    this.green = green;
}
public int getRed() {
    return red;
}
public void setRed(int red) {
    this.red = red;
}
public String getHexCode() {
    return (red < 16? "0" : "") 
            + Integer.toHexString(red)
            + (green < 16? "0" : "")
            + Integer.toHexString(green) 
            + (blue < 16? "0" : "")
            + Integer.toHexString(blue);
}
}

Design.java：

package app07c;
import com.opensymphony.xwork2.ActionSupport;

public class Design extends ActionSupport {
private String designName;
private Color color;
public Color getColor() {
    return color;
}
public void setColor(Color color) {
    this.color = color;
}
public String getDesignName() {
    return designName;
}
public void setDesignName(String designName) {
    this.designName = designName;
}
}

MyColorConverter.java：

package app07c.converter;
import java.util.Map;
import org.apache.struts2.util.StrutsTypeConverter;
import app07c.Color;
import com.opensymphony.xwork2.conversion.TypeConversionException;

public class MyColorConverter extends StrutsTypeConverter {
public Object convertFromString(Map context, String[] values,
        Class toClass) {
    boolean ok = false;
    String rgb = values[0];
    String[] colorComponents = rgb.split(",");
    if (colorComponents != null 
            && colorComponents.length == 3) {
        String red = colorComponents[0];
        String green = colorComponents[1];
        String blue = colorComponents[2];
        int redCode = 0;
        int greenCode = 0;
        int blueCode = 0;
        try {
            redCode = Integer.parseInt(red.trim());
            greenCode = Integer.parseInt(green.trim());
            blueCode = Integer.parseInt(blue.trim());
            if (redCode >= 0 && redCode < 256 
                    && greenCode >= 0 && greenCode < 256 
                    && blueCode >= 0 && blueCode < 256) {
                Color color = new Color();
                color.setRed(redCode);
                color.setGreen(greenCode);
                color.setBlue(blueCode);
                ok = true;
                return color;
            }
        } catch (NumberFormatException e) {
        }
    }
    if (!ok) {
        throw new 
                TypeConversionException("Invalid color codes");
    }
    return null;
}

public String convertToString(Map context, Object o) {
    Color color = (Color) o;
    return color.getRed() + "," 
            + color.getGreen() + ","
            + color.getBlue();
}
}

Design.jsp：

<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Color</title>
<style type="text/css">@import url(css/main.css);</style>
<style>
.errorMessage {
color:red;
}
</style>
</head>
<body>
<div id="global" style="width:450px">
<h4>Color</h4>
Please enter the RGB components, each of which is
an integer between 0 and 255 (inclusive). Separate two components
with a comma. For example, green is 0,255,0.
<s:form action="Design2">
    <s:textfield name="designName" label="Design Name"/>
    <s:textfield name="color" label="Color"/>
    <s:submit/>     
</s:form>

</div>
</body>
</html>

Display.jsp：

<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Design Details</title>
<style type="text/css">@import url(css/main.css);</style>
<style type="text/css">
     .colorSample {
border:1px solid black;
width:100%;
height:100px;
background:#<s:property value="color.hexCode"/>;
}
</style>
</head>
<body>
<div id="global" style="width:250px">
<h4>Design details:</h4>
    Design name: <s:property value="designName"/>
    <br/>Color code: <s:property value="color"/>
    <div class="colorSample"/>
    </div>
    </body>
     </html>

我试图将 web 内容文件夹从 更改为/jsp，/以便项目结构与目录结构相同。然后我使用 ant 构建脚本来编译和运行项目并获得以下堆栈：

ant -f C:\\struts2\\budi_ebook\\struts2extractb\\app07c -DforceRedeploy=false     -Ddirectory.deployment.supported=true -Dnb.wait.for.caches=true run
init:
 deps-module-jar:
deps-ear-jar:
deps-jar:
Warning: Program Files (x86)\F-Secure\Anti-Virus\aquarius\fa.log modified in the future.
Warning: Program Files\CommVault\Simpana\Log Files\CVD.log modified in the future.
Warning: Users\ManaarDC\NTUSER.DAT modified in the future.
Warning: Users\ManaarDC\ntuser.dat.LOG1 modified in the future.
Warning: Users\RedGuard_Admin.MANAARNET\AppData\Local\Temp\3\output1375645810208 modified in     the future.
Warning: Users\RedGuard_Admin.MANAARNET\AppData\Local\Temp\3\toolbar_log.txt modified in the     future.
Warning: Windows\Temp\avg_secure_search.log modified in the future.
Warning: app\ManaarDC\diag\rdbms\orcldw\orcldw\trace\orcldw_dbrm_3148.trc modified in the future.
Warning: app\ManaarDC\diag\rdbms\orcldw\orcldw\trace\orcldw_dbrm_3148.trm modified in the future.
Warning: app\ManaarDC\product\11.2.0\dbhome_1\D5H9RBP1.ManaarNet.com_orclDW\sysman\emd\agntstmp.txt modified in the future.
 Warning: app\ManaarDC\product\11.2.0\dbhome_1\D5H9RBP1.ManaarNet.com_orclDW\sysman\log\emagent.trc modified in the future.
Warning: app\ManaarDC\product\11.2.0\dbhome_1\D5H9RBP1.ManaarNet.com_orclDW\sysman\log\emoms.log modified in the future.
Warning: app\ManaarDC\product\11.2.0\dbhome_1\D5H9RBP1.ManaarNet.com_orclDW\sysman\log\emoms.trc modified in the future.    
Warning: app\ManaarDC\product\11.2.0\dbhome_1\oc4j\j2ee\OC4J_DBConsole_D5H9RBP1.ManaarNet.com_orclDW\log\em-application.log modified in the future.
Warning: inetpub\logs\LogFiles\W3SVC1\u_ex130804.log modified in the future.
C:\struts2\budi_ebook\struts2extractb\app07c\nbproject\build-impl.xml:841: 
java.lang.OutOfMemoryError: GC overhead limit exceeded
at java.util.Arrays.copyOfRange(Arrays.java:2694)
at java.lang.String.<init>(String.java:203)
at java.lang.String.substring(String.java:1913)
at java.util.StringTokenizer.nextToken(StringTokenizer.java:352)
at org.apache.tools.ant.util.FileUtils.normalize(FileUtils.java:741)
at org.apache.tools.ant.util.FileUtils.resolveFile(FileUtils.java:616)
at org.apache.tools.ant.types.resources.FileResource.<init>(FileResource.java:60)
at org.apache.tools.ant.util.SourceFileScanner$1.<init>(SourceFileScanner.java:96)
at org.apache.tools.ant.util.SourceFileScanner.restrict(SourceFileScanner.java:95)
at org.apache.tools.ant.taskdefs.Copy.buildMap(Copy.java:787)
at org.apache.tools.ant.taskdefs.Copy.scan(Copy.java:744)
at org.apache.tools.ant.taskdefs.Copy.iterateOverBaseDirs(Copy.java:666)
at org.apache.tools.ant.taskdefs.Copy.execute(Copy.java:563)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.GeneratedMethodAccessor90.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:392)
at org.apache.tools.ant.Target.performTasks(Target.java:413)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:283)
at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:541)
at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153)
  BUILD FAILED (total time: 12 minutes 5 seconds)
4

2 回答 2

1

无法从项目资源管理器中看到Web 内容根目录，因为它不是目录结构，而是项目结构。例如，如果您使用 maven 那么它应该是[project root]/src/main/webapp. 此目录应包含WEB-INF文件夹。如果您在项目设置中设置了Web 内容根文件夹，/jsp那么这是错误的，因为它会影响 JSP 和其他项目文件。您应该将其设置为/。在这种情况下，项目根目录和Web 内容根目录将是相同的，或者在项目根文件夹中创建一个新文件夹，WebContent并在其中放置jsp、WEB-INF和其他 Web 资源。设置网页内容根项目设置为/WebContent. 然后你可以/jsp/在结果映射中使用。

于 2013-08-04T16:58:41.907 回答
0

好吧，这就是我解决它的方法。我使用 Netbeans 'Web Applications with Existing Sources' 来导入项目。由于某种原因，导入的项目没有注册“jsp”目录。它只看到 Web Pages 目录中的 JSP 文件，而不是 Web Pages/jsp。所以我只是删除了struts.xml 中的/jsp 引用。该应用程序现在运行良好，验证错误不再存在。

我对这个答案很满意，因为我可以运行应用程序，但我不高兴我完全理解 IDE 如何构建这些类型的应用程序，因为导入的目录结构显然是错误的（并且错过了 jsp 文件夹）。如果有人能进一步阐明这一点，或者我是否应该发布一个关于在 Netbeans 中构建 Struts2 的单独问题，将不胜感激

于 2013-08-03T17:51:05.777 回答